Taking as its point of departure the landmark paper, "The Role of the School Library Media Program in Networking," this study assesses the state of networking involving school libraries in mid-1982, with emphasis on operations of substantial significance to students and teachers and resource sharing. An analysis of the networking concept and definitions of the term are followed by a thorough overview for the uninitiated of the development of library networking in the United States, with particular attention to those involving school library media centers. Background pertinent to schools is then examined, including other such cooperative arrangements in the school environment, student use of public and other libraries, and theoretical justifications. Accounts of school library networking in 14 states are provided--Alaska, Colorado, Connecticut, Florida, Illinois, Indiana, Iowa, Maryland, Minnesota, New Jersey, New York, North Carolina, Washington, and Wisconsin--and the final chapter summarizes the major themes that pervade the subject, formulates some tentative conclusions, and suggests topics in need of further investigation. An extensive bibliography is provided, and selected excerpts from state statutes, interlibrary loan policies, and other documents are appended. (BBM)